The first step in treating rust is keeping it from forming, which means keeping your truck’s metal painted, plated, or otherwise protected so oxidation can’t get a foothold. If it’s already too late and you see those tell-tale bubbles under the paint or surface rust spreading across a panel or framerail, you’ve got to take immediate action. Once rust starts, it’ll keep growing until your sheetmetal looks like that really old Swiss cheese you found buried in the fridge behind last week’s meatloaf.
via 1983 Toyota FJ40 Rust Removal – 4Wheel & Off-Road Magazine.